Hello Brajesh,

Please ill like to humbly ask for your assistance with a buddypress followers notification plugin im trying to create which is similar to this plugin at https://wordpress.org/plugins/you-have-a-new-message/

What i am trying to achieve is when

1. logged in users receives only 1 new follower then display the text/message (You have a new follower)

2. when logged in users receive more than 1 new followers then display the text/message (You have [follower_count] new followers)

3. Link the text/message to user followers tab with

I want to make buddypress more lightweight by disabling the buddypress notification component and use this for a casual notification for new followers gained

This is the rough work I have

 <?php
/*
Plugin Name: You Have a New (BuddyPress) Follower
Description: Widget and Shortcode to notify users about new followers
Version: 1.0
Author: Buddydev
License: GPL2
*/

class New_Followers_Notification_Widget extends WP_Widget {

    public function __construct() {
        parent::__construct(
            'you-have-a-new-follower-widget',
            'New Followers Notification',
            array('description' => 'Notifies you about new followers')
        );
    }

    public function widget( $args, $instance ) {
		$single = ( ! empty( $instance['single'] ) ) ? $instance['single'] : '';
		$multiple = ( ! empty( $instance['multiple'] ) ) ? $instance['multiple'] : '';
		echo yhanf_get_notice( $single, $multiple );
	}

    public function form( $instance ) {
		$single = ! empty( $instance['single'] ) ? $instance['single'] : esc_html__( 'You have a new follower', 'you-have-a-new-follower' );

		?>
			<p>
			<label for="<?php echo esc_attr( $this->get_field_id( 'single' ) ); ?>"><?php esc_attr_e( 'Single Message:', 'you-have-a-new-follower' ); ?></label>
			<input class="widefat" id="<?php echo esc_attr( $this->get_field_id( 'single' ) ); ?>" name="<?php echo esc_attr( $this->get_field_name( 'single' ) ); ?>" type="text" value="<?php echo esc_attr( $single ); ?>">
			</p>
		<?php

		$multiple = ! empty( $instance['multiple'] ) ? $instance['multiple'] : esc_html__( 'You have %s new followers', 'you-have-a-new-follower' );

		?>
			<p>
			<label for="<?php echo esc_attr( $this->get_field_id( 'multiple' ) ); ?>"><?php esc_attr_e( 'Multiple Messages: (%s = follower count)', 'you-have-a-new-follower' ); ?></label>
			<input class="widefat" id="<?php echo esc_attr( $this->get_field_id( 'multiple' ) ); ?>" name="<?php echo esc_attr( $this->get_field_name( 'multiple' ) ); ?>" type="text" value="<?php echo esc_attr( $multiple ); ?>">
			</p>
		<?php
	}

    public function update( $new_instance, $old_instance ) {
        $instance = array();
        $instance['single'] = ! empty( $new_instance['single'] ) ? strip_tags( $new_instance['single'] ) : '';
        $instance['multiple'] = ! empty( $new_instance['multiple'] ) ? strip_tags( $new_instance['multiple'] ) : '';
        return $instance;
    }
}

function yhanf_register_widget() {
    register_widget( 'New_Followers_Notification_Widget' );
}
add_action( 'widgets_init', 'yhanf_register_widget' );

function yhanf_get_new_followers( $atts, $content = null ) {
	extract(shortcode_atts(array(
			"single" => '',
			"multiple" => '',
		), $atts, 'you-have-a-new-follower'));
    return yhanf_get_notice( $single, $multiple );
}
add_shortcode( 'you-have-a-new-follower', 'yhanf_get_new_followers' );

function yhanf_get_notice( $single = '', $multiple = '' ) {

    if ( !is_user_logged_in() ) {
        return;
    }

    $current_user = wp_get_current_user();
    $user_id = $current_user->ID;

    $args = array(
        'following_id' => $user_id,
        'orderby' => 'date_followed',
        'order' => 'DESC',
        'per_page' => 1
    );

    $followers = BP_Follow::get_followers( $args );

    if ( empty( $followers['followers'] ) ) {
        return;
    }

    $count = count( $followers['followers'] );
    $out = '<a class="yhanf" href="'. bp_loggedin_user_domain() .'followers/">';

    if ( $count === 1 ) {
        $out .= $single ? $single : __( 'You have a new follower', 'you-have-a-new-follower' );
    } else {
        $out .= sprintf( $multiple ? $multiple : __( 'You have %s new followers', 'you-have-a-new-follower' ), $count );
    }

    $out .= '</a>';

    return $out;
}

?> 

Thanks